SOLUTION: How many 6-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, if repetitions of digits are allowed (remember that you can not have zero as the first digit)?
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Question 955574: How many 6-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, if repetitions of digits are allowed (remember that you can not have zero as the first digit)? Answer by MathLover1(20849) (Show Source):
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if allowed as a starting digit, we have
to --> million combinations
However, if you disallow as a starting digit then you have the following:
choices for the digit (1-9) choices for the digit (0-9) choices for the digit (0-9) choices for the digit (0-9) choices for the digit (0-9) choices for the digit (0-9)
combinations
